feat(asl/extraction): Complete Tool 3 M1+M2 - skeleton pipeline and HITL workbench

M1 Skeleton Pipeline:
- Scatter-dispatch + Aggregator polling pattern (PgBoss)
- PKB ACL bridge (PkbBridgeService -> PkbExportService DTOs)
- ExtractionSingleWorker with DeepSeek-V3 LLM extraction
- PermanentExtractionError for non-retryable failures
- Phantom Retry Guard (idempotent worker)
- 3-step minimal frontend (Setup -> Progress -> Workbench)
- 4 new DB tables (extraction_templates, project_templates, tasks, results)
- 3 system templates seed (RCT, Cohort, QC)
- M1 integration test suite

M2 HITL Workbench:
- MinerU VLM integration for high-fidelity table extraction
- XML-isolated DynamicPromptBuilder with flat JSON output template
- fuzzyQuoteMatch validator (3-tier confidence scoring)
- SSE real-time logging via ExtractionEventBus
- Schema-driven ExtractionDrawer (dynamic field rendering from template)
- Excel wide-table export with flattenModuleData normalization
- M2 integration test suite

Critical Fixes (data normalization):
- DynamicPromptBuilder: explicit flat key-value output format with example
- ExtractionExcelExporter: handle both array and flat data formats
- ExtractionDrawer: schema-driven rendering instead of hardcoded fields
- ExtractionValidator: array-format quote verification support
- SSE route: Fastify register encapsulation to bypass auth for EventSource
- LLM JSON sanitizer: strip illegal control chars before JSON.parse

Also includes: RVW stats verification spec, SSA expert config guide

Tested: M1 pipeline test + M2 HITL test + manual frontend verification
Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/index.ts

@@ -23,6 +23,7 @@ import { registerTestRoutes } from './test-platform-api.js';
 import { registerScreeningWorkers } from './modules/asl/services/screeningWorker.js';
 import { registerResearchWorker } from './modules/asl/workers/researchWorker.js';
 import { registerExtractionWorkers } from './modules/dc/tool-b/workers/extractionWorker.js';
+import { registerExtractionWorkers as registerAslExtractionWorkers } from './modules/asl/extraction/workers/index.js';
 import { registerParseExcelWorker } from './modules/dc/tool-c/workers/parseExcelWorker.js';
 import { registerReviewWorker } from './modules/rvw/workers/reviewWorker.js';
 import { jobQueue } from './common/jobs/index.js';
@@ -253,6 +254,10 @@ const start = async () => {
       registerParseExcelWorker();
       logger.info('✅ DC Tool C parse excel worker registered');
       
+      // 注册ASL工具3全文提取Workers（散装派发 + Aggregator）
+      await registerAslExtractionWorkers();
+      logger.info('✅ ASL extraction workers registered (Tool 3)');
+      
       // 注册RVW审稿Worker（包含启动时清理卡住任务）
       await registerReviewWorker();
       logger.info('✅ RVW review worker registered');